Charging an IPod with USB

  • Thread starter Thread starter C.B.
  • Start date Start date
C

C.B.

I'm in China where their electrical supply is 220V. I am using my laptop to
charge my stepson's IPod. However, he is sometimes at his father's house
where he only has access to a desktop which is using the 220V electrical
supply. Does the desktop USB connection supply the same amount of power as
my laptop USB connection or will I toast his IPod when using the USB
connection on the desktop? In other words, do all USB connections supply the
same amount of output power, regardless of the input voltage?

Please excuse my ignorance and thank you in advance for any assistance.

C.B.
 
C.B. said:
I'm in China where their electrical supply is 220V. I am using my laptop
to charge my stepson's IPod. However, he is sometimes at his father's
house where he only has access to a desktop which is using the 220V
electrical supply. Does the desktop USB connection supply the same amount
of power as my laptop USB connection or will I toast his IPod when using
the USB connection on the desktop? In other words, do all USB connections
supply the same amount of output power, regardless of the input voltage?

Please excuse my ignorance and thank you in advance for any assistance.

C.B.
Click to expand...


All USB connections supply the same output voltage (5 volts DC) unless there
is a failure in the system, then of course then anything plugged into them
would be fried if the voltage was unregulated.

Remember that the computer's power supply on a desktop converts AC current
to DC current and delivers reduced voltages to the components inside the
desktop: 12 volts for some components, 5 volts for other components and 3.3
volts for the CPU, memory and other components which may also be reduced
further by specific "stepdown transformers" for the components.
 
I'm in China where their electrical supply is 220V. I am using my laptop to
charge my stepson's IPod. However, he is sometimes at his father's house
where he only has access to a desktop which is using the 220V electrical
supply. Does the desktop USB connection supply the same amount of power as
my laptop USB connection or will I toast his IPod when using the USB
connection on the desktop? In other words, do all USB connections supply the
same amount of output power, regardless of the input voltage?

Please excuse my ignorance and thank you in advance for any assistance.

C.B.
Click to expand...

USB outputs 5 volts regardless of what is powering the source. This
includes computers and wall warts.
 
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